/*	$OpenBSD: rf_threadstuff.c,v 1.3 2000/01/07 14:50:23 peter Exp $	*/
/*	$NetBSD: rf_threadstuff.c,v 1.5 1999/12/07 02:13:28 oster Exp $	*/

/*
 * rf_threadstuff.c
 */

/*
 * Copyright (c) 1995 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Jim Zelenka
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

#include "rf_types.h"
#include "rf_threadstuff.h"
#include "rf_general.h"
#include "rf_shutdown.h"

void mutex_destroyer(void *);
void cond_destroyer(void *);

/*
 * Shared stuff.
 */

void
mutex_destroyer(void *arg)
{
	int rc;

	rc = rf_mutex_destroy(arg);
	if (rc) {
		RF_ERRORMSG1("RAIDFRAME: Error %d auto-destroying mutex\n", rc);
	}
}

void
cond_destroyer(void *arg)
{
	int rc;

	rc = rf_cond_destroy(arg);
	if (rc) {
		RF_ERRORMSG1("RAIDFRAME: Error %d auto-destroying condition\n",
		    rc);
	}
}

int
_rf_create_managed_mutex(RF_ShutdownList_t **listp, RF_DECLARE_MUTEX(*m),
    char *file, int line)
{
	int rc, rc1;

	rc = rf_mutex_init(m);
	if (rc)
		return (rc);

	rc = _rf_ShutdownCreate(listp, mutex_destroyer, (void *) m, file, line);
	if (rc) {
		RF_ERRORMSG1("RAIDFRAME: Error %d adding shutdown entry\n", rc);
		rc1 = rf_mutex_destroy(m);
		if (rc1) {
			RF_ERRORMSG1("RAIDFRAME: Error %d destroying mutex\n",
			    rc1);
		}
	}

	return (rc);
}

int
_rf_create_managed_cond(RF_ShutdownList_t **listp, RF_DECLARE_COND(*c),
    char *file, int line)
{
	int rc, rc1;

	rc = rf_cond_init(c);
	if (rc)
		return (rc);

	rc = _rf_ShutdownCreate(listp, cond_destroyer, (void *) c, file, line);
	if (rc) {
		RF_ERRORMSG1("RAIDFRAME: Error %d adding shutdown entry\n", rc);
		rc1 = rf_cond_destroy(c);
		if (rc1) {
			RF_ERRORMSG1("RAIDFRAME: Error %d destroying cond\n",
			    rc1);
		}
	}
	return (rc);
}

int
_rf_init_managed_threadgroup(RF_ShutdownList_t **listp, RF_ThreadGroup_t *g,
    char *file, int line)
{
	int rc;

	rc = _rf_create_managed_mutex(listp, &g->mutex, file, line);
	if (rc)
		return (rc);

	rc = _rf_create_managed_cond(listp, &g->cond, file, line);
	if (rc)
		return (rc);

	g->created = g->running = g->shutdown = 0;
	return (0);
}

int
_rf_destroy_threadgroup(RF_ThreadGroup_t *g, char *file, int line)
{
	int rc1, rc2;

	rc1 = rf_mutex_destroy(&g->mutex);
	rc2 = rf_cond_destroy(&g->cond);

	if (rc1)
		return (rc1);

	return (rc2);
}

int
_rf_init_threadgroup(RF_ThreadGroup_t *g, char *file, int line)
{
	int rc;

	rc = rf_mutex_init(&g->mutex);
	if (rc)
		return (rc);

	rc = rf_cond_init(&g->cond);
	if (rc) {
		rf_mutex_destroy(&g->mutex);
		return (rc);
	}

	g->created = g->running = g->shutdown = 0;
	return (0);
}


/*
 * Kernel.
 */

int
rf_mutex_init(decl_simple_lock_data(, *m))
{
	simple_lock_init(m);
	return (0);
}

int
rf_mutex_destroy(decl_simple_lock_data(, *m))
{
	return (0);
}

int
rf_cond_init(RF_DECLARE_COND(*c))
{
	*c = 0;			/* No reason. */
	return (0);
}

int
rf_cond_destroy(RF_DECLARE_COND(*c))
{
	return (0);
}
